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Conference Papers Year : 2011

Study on the Precision of Equivalent Electric Models for Planar Distributed Periodic Structures

Abstract

Planar distributed periodic structures more commonly known as mushroom struc- tures which present a negative refractive index (NRI) in a very narrow frequency band, are usually studied using equivalent electric models under quasi-static approximation. The dispersion equa- tions for di®erent con¯gurations can be established using Bloch theorem for 2D transmission lines (TL). This paper proposes a critical study concerning the validation of results obtained from these utilised dispersion equations through comparing them to those obtained using a full- wave method. An extraction method has been proposed to simulate the frequency dependent of each distributed element. these results shown a frequency dependence di®erent from that ob- tained from e®ective elements calculated using conventional analytical formulas for the e®ective material parameters of the unit cell.
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Dates and versions

hal-00632972 , version 1 (17-10-2011)

Identifiers

  • HAL Id : hal-00632972 , version 1

Cite

Zine Eddine Djeffal, Hakeim Talleb, David Lautru, Victor Fouad Hanna. Study on the Precision of Equivalent Electric Models for Planar Distributed Periodic Structures. Conference PIERS 2011, Mar 2011, Marrakesh, Morocco. ⟨hal-00632972⟩
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